1995 Chevy silverado with a 5.7. Was running fine i stopped at a stoplight and it died. It was hard starting, i had to turn the AC off to get it to start, then had to 2 feet it home. Now it starts and idles rough, it does the surge thing when in park. When i put it in gear the truck dies, when i turn AC on the truck dies. When i try to drive it, and give it gas the truck runs rough and has no power at all once i get RPMS above 2200 the truck runs just fine. Truck runs great on the high way but dies when i stop. I have changed spark plugs, wires, fuel filter, cleaned injectors and i THINK i got all vacuum lines checked for leaks. what am i missing.
-   I have roughly the same problem on my 95 silverado only I have replaced most of the sensors, rebuilt the throttlebody and have no vacum leaks, and in park, the rpm's pulsate from 500 to 900. once i get going, it runs perfect. to this day it is still acting up. I'm starting tothink I might have a faulty ecm. any suggestions before I spend alot of cash. -   crazychillin
I have experienced this problem on similar vehicles. You should try and replace the coolant temp sensor. If it is not reading the correct temp to the ecm, it will not get the right fuel map. Also, the cts will not always throw a code.
Same thing happened twice to my 1996 5.7L. changed the EGR valve, all was good after that. The valve gets clogged, sometimes you can clean it out a little to get you home. On the 96 it is located on the top of the motor on the front.
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